Update deploy.yml

add prod flag.

Author: ApplebaumIan

.github/workflows/deploy.yml

@@ -23,4 +23,4 @@ jobs:
           export PROJECT_NAME=$(echo ${GITHUB_REPOSITORY#*/})
           git config --global user.name "$(git --no-pager log --format=format:'%an' -n 1)"
           git config --global user.email "$(git --no-pager log --format=format:'%ae' -n 1)"
-          cd documentation && yarn deploy
+          cd documentation && NODE_ENV="production" yarn deploy